Other
Nuremburg Online: Mediaeval Dungeons
This site on the Mediaeval Dungeons of Nuremberg provides information on its history, the system of justice, the prison and torture chamber, and the procedures for execution.
Wikimedia
Wikipedia: Medieval Inquisition
A Wikipedia article that reports on the Medieval Inquisition throughout Europe during the 12th and 13th centuries. Discusses the origin and history as well as the procedure of investigation, trial, torture, and punishment.
Other
Professor Pavlac's Torture Pages
Discusses torture as a method of getting information, and the methods used in the European witch hunts. Also discusses torture after 1800 being used as a form of punishment. Includes some excellent links to other resources.